Environmental Instruments





FL-3 Luminescent/Optical Dissolved Oxygen Analyzer

  • Application Temperature range:
    Instrument: -30 C to +50C
    Sensor: -30C to +204 C
  • Operation Range: 0 ppm to Supersaturation
  • Automatic temperature compensation
  • Measurement Accuracy: (aqueous solutions 0-10 ppm) +/- 1%
  • Measurement stability: .05 ppm
  • Response time:
    Aqueous solutions: 95% of measured value in 30 seconds Gas Phase: 95% of measured value in 7 seconds
    NOTE: Response time will decrease with increased flow, however, FLOW IS NOT REQUIRED FOR A STABLE MEASUREMENT
  • Sensor: .005-.007” thick silicon
    Sensor Cable: polyurethane
    Sensor type: luminescent/fluorescent
  • Excitation wavelength: 470 nm
    Emission wavelength: 610 nm
  • Input power: 110-240 VAC 50/60 HZ, 24VDC
  • Outputs: three control relays, 4/20 ma (maximum resistance of 600 ohms) D.O. & temperature
  • Calibration: Automatic, single button after altitude is set
  • Enclosure: NEMA 4X UL listed
  • Display: Harsh Environment 4-line 20 character backlit LCD
  • Probe Body: 9”L x 1.25” diameter PVC (no seals)

FL-3 Handheld Dissolved Oxygen Analyzer

  • Application Temp Range:
    Probe: -30°C to +50°C
    Sensor: -30° to +204°C
  • Operation Range: 0 mg/l to supersaturation 0.01 to 20.0 mg/l
  • Temp compensation: automatic (thermistor)
  • Pressure Compensation: automatic
  • Salinity correction: automatic
  • Measurement accuracy: aqueous solutions (0- 10 mg/l ) +/- 1%
  • Measurement stability: .05 mg/l
  • Response time@ 20°C: Aqueous solutions: 95% measured response 15 seconds Gas: 7 seconds
    Flow is not required for measurement but as flow increases, response time decreases
  • Detection Limit: 0.01 mg/l (estimated)
  • Sensor material: silicone
  • Sensor cable: polyurethane 12 ft. standard length (other lengths available upon request)
  • Sensor type: luminescent/fluorescent
  • Probe Body materials: PVC & Stainless steel
  • Probe Chemical resistance: For aqueous solutions only, do not immerse in solvents or alcohols
  • Probe Dimensions: 4-1/4”L x 1-1/4”diameter
  • Enclosure: ABS plastic, waterproof, dust proof, chemical resistant, floatable (meter/probe connection requires drying if wetted)
  • Enclosure dimensions: 3-1/2”W x 7-5/8”L x 1- 3/4” Depth
  • Net Weight: .83 lbs.
  • Interferences: none at typical concentrations found in DW and WW
  • Zero Calibration function for precise calibration
  • Internal Data logging: Adjustable sample rate down to one minute with storage capacity of more than 256 samples onboard
  • Power source: Three AA Batteries
  • Battery life: Approximately 20-40,000 measurements (battery life is a function of use)
  • Instrument and probe limited Warranty: 3 years
  • Sensor Warranty: 1 year (estimated life of sensor is extended considerably with proper use and maintenance. Sensor is not damaged by direct or indirect sunlight) Applications in water, wastewater, aquaculture, & other aqueous solutions

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